1. Coon, M. J., Foote, J. L., and Christner, J. E., Proceedings of the Vth International Congress of Biochemistry, Moscow, August 1961, Vol. 7, Symposium on biosynthesis of lipids, Pergamon Press, New York, 1963, p. 248.
2. Goldberg, M. W., and Sternbach, L. H., U. S. patents 2,489,237 and 2,489,238 (1949).
3. Determination of Biotin with Lactobacillus arabinosus